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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2024-04-12 08:47:50 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-05-06 02:53:36 +0200 |
| commit | 1f2d8b4421bd0da2c97fb8bad5cc85fc929fef64 (patch) | |
| tree | 0deecdcd97f749e1cb844fc2bcc5cccb29abeec9 /mm/filemap.c | |
| parent | mm: correct the docs for thp_fault_alloc and thp_fault_fallback (diff) | |
| download | linux-1f2d8b4421bd0da2c97fb8bad5cc85fc929fef64.tar.xz linux-1f2d8b4421bd0da2c97fb8bad5cc85fc929fef64.zip | |
mm: move mm counter updating out of set_pte_range()
Patch series "mm: batch mm counter updating in filemap_map_pages()", v3.
Let's batch mm counter updating to accelerate filemap_map_pages().
This patch (of 2):
In order to support batch mm counter updating in filemap_map_pages(), move
mm counter updating out of set_pte_range(), the folios are file from
filemap, and distinguish folios by vmf->flags and vma->vm_flags from
another caller finish_fault().
Link: https://lkml.kernel.org/r/20240412064751.119015-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20240412064751.119015-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 21e70434d931..5a518c5075fb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3539,6 +3539,8 @@ static vm_fault_t filemap_map_folio_range(struct vm_fault *vmf, skip: if (count) { set_pte_range(vmf, folio, page, count, addr); + add_mm_counter(vmf->vma->vm_mm, mm_counter_file(folio), + count); folio_ref_add(folio, count); if (in_range(vmf->address, addr, count * PAGE_SIZE)) ret = VM_FAULT_NOPAGE; @@ -3553,6 +3555,7 @@ skip: if (count) { set_pte_range(vmf, folio, page, count, addr); + add_mm_counter(vmf->vma->vm_mm, mm_counter_file(folio), count); folio_ref_add(folio, count); if (in_range(vmf->address, addr, count * PAGE_SIZE)) ret = VM_FAULT_NOPAGE; @@ -3589,6 +3592,7 @@ static vm_fault_t filemap_map_order0_folio(struct vm_fault *vmf, ret = VM_FAULT_NOPAGE; set_pte_range(vmf, folio, page, 1, addr); + add_mm_counter(vmf->vma->vm_mm, mm_counter_file(folio), 1); folio_ref_inc(folio); return ret; |